# Relationship history for MSHA mine 1700987

Current hierarchy: **Janet  McGillan → McGillan Inc. → Bull Pit**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Fred G  McGillan Jr → Bull Pit; 2007-08-23 to 2014-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Janet  McGillan → Bull Pit; 2014-07-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** McGillan Inc. → Bull Pit; 2016-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fred G  McGillan Jr → McGillan Inc.; 2016-08-02 to 2014-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Janet  McGillan → McGillan Inc.; 2016-08-02 to current/open; source msha-controller-operator-history